Bradley, Infernal Artificer

{t}: Create a colorless artifact token named Infernal
Device with "{2}, {t}: Sacrifice this artifact: It deals 2 damage to any target."

Whenever you cast an artifact spell, you may draw
a card, then discard a card.

{u}{b}{r}, Sacrifice an artifact: Return target artifact
card from your graveyard to the battlefield. It gains
haste until end of turn. Exile it at the beginning of
the next end step.